/*
 * @Author: gaoxinglong
 * @Date: 2022-11-16 14:24:20
 * @LastEditTime: 2022-11-16 14:27:18
 * @LastEditors: gaoxinglong
 */
// Copyright (c) 2016 HR

#ifndef FRONTEND_FFT_H_
#define FRONTEND_FFT_H_

#ifndef M_PI
#define M_PI 3.1415926535897932384626433832795
#endif
#ifndef M_2PI
#define M_2PI 6.283185307179586476925286766559005
#endif

namespace wenet {

// Fast Fourier Transform

int fft(float *x, float *y, int n);

} // namespace wenet

#endif // FRONTEND_FFT_H_
